package com.imooc.controller;

import com.imooc.pojo.Users;
import com.imooc.pojo.bo.UserBo;
import com.imooc.service.StuService;
import com.imooc.service.UserService;
import com.imooc.utils.CookieUtils;
import com.imooc.utils.IMOOCJSONResult;
import com.imooc.utils.JsonUtils;
import com.imooc.utils.MD5Utils;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @Author : Kyle_Fu
 * @Date: 2020-06-14 23:14
 */

@Api(value = "注册登陆" , tags = {"用于注册登陆的相关接口"})
@RestController
@RequestMapping("passport")
public class PassportController {

    @Autowired
    private UserService userService;

    @ApiOperation(value = "判断用户名是否存在" , notes = "判断用户名是否存在" , httpMethod = "GET")
    @GetMapping("/usernameIsExist")
    public IMOOCJSONResult usernameIsExist(@RequestParam String username){

        //1.判断用户名不能为空
        if (StringUtils.isBlank(username)){
            return IMOOCJSONResult.errorMsg("用户名不能为空");
        }

        //2.查找注册的用户名是否存在
        boolean isExist = userService.queryUsernameIsExist(username);
        if (isExist){
            return IMOOCJSONResult.errorMsg("用户名已经存在");
        }

        //3.请求成功,用户名没有重复
        return IMOOCJSONResult.ok();
    }

    @ApiOperation(value = "用户注册" , notes = "用户注册" , httpMethod = "POST")
    @PostMapping("/regist")
    public IMOOCJSONResult regist(@RequestBody UserBo userBo,
                                  HttpServletRequest request,
                                  HttpServletResponse response){

        String username = userBo.getUsername();
        String password = userBo.getPassword();
        String confirmPwd = userBo.getConfirmPassword();

        //0. 判断用户名和密码必须不为空
        if (StringUtils.isBlank(username) ||
                StringUtils.isBlank(password) ||
                StringUtils.isBlank(confirmPwd)) {
            return IMOOCJSONResult.errorMsg("用户名和密码不能为空");
        }

        //1. 查询用户名是否存在
        boolean isExist = userService.queryUsernameIsExist(username);
        if (isExist){
            return IMOOCJSONResult.errorMsg("用户名已经存在");
        }

        //2. 密码长度不能少于6
        if (password.length() < 6) {
            return IMOOCJSONResult.errorMsg("密码长度不能少于6");
        }

        //3. 判断两次密码是否一致
        if (!password.equals(confirmPwd)) {
            return IMOOCJSONResult.errorMsg("两次密码输入不一致");
        }

        //4. 实现注册
        Users userResult = userService.createUser(userBo);

        //把对象中关键信息置为空
        userResult = setNullProperty(userResult);

        //设置cookie  isEncode -- 是否加密
        CookieUtils.setCookie(request,response,"user",
                JsonUtils.objectToJson(userResult),true);

        //TODO 生成用户token,存入redis会话
        //TODO 同步购物车数据

        return IMOOCJSONResult.ok();
    }


    @ApiOperation(value = "用户登陆" , notes = "用户登录" , httpMethod = "POST")
    @PostMapping("/login")
    public IMOOCJSONResult login(@RequestBody UserBo userBo,
                                 HttpServletRequest request,
                                 HttpServletResponse response) throws Exception {

        String username = userBo.getUsername();
        String password = userBo.getPassword();

        //0. 判断用户名和密码必须不为空
        if (StringUtils.isBlank(username) ||
                StringUtils.isBlank(password)) {
            return IMOOCJSONResult.errorMsg("用户名和密码不能为空");
        }

        //1. 实现登陆
        Users userResult = userService.queryUserForLogin(username,
                MD5Utils.getMD5Str(password));

        if (userResult == null){
            return IMOOCJSONResult.errorMsg("用户名或密码不正确");
        }

        //把对象中关键信息置为空
        userResult = setNullProperty(userResult);

        //设置cookie  isEncode -- 是否加密
        CookieUtils.setCookie(request,response,"user",
                JsonUtils.objectToJson(userResult),true);

        //TODO 生成用户token,存入redis会话
        //TODO 同步购物车数据

        return IMOOCJSONResult.ok(userResult);
    }

    private Users setNullProperty(Users userResult) {
        userResult.setPassword(null);
        userResult.setMobile(null);
        userResult.setEmail(null);
        userResult.setCreatedTime(null);
        userResult.setUpdatedTime(null);
        userResult.setBirthday(null);
        return userResult;
    }


    @ApiOperation(value = "用户退出登陆" , notes = "用户退出登陆" , httpMethod = "POST")
    @PostMapping("/logout")
    public IMOOCJSONResult logout(@RequestParam String userId,
                                  HttpServletRequest request,
                                  HttpServletResponse response){

        //清楚用户相关信息的cookie
        CookieUtils.deleteCookie(request,response,"user");

        // TODO 用户退出登录,需要清空购物车
        // TODO 分布式会话中需要清除用户数据

        return IMOOCJSONResult.ok();
    }

}
